Niasite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Niasite
Formula:
Ni2+4.5(AsO4)3
Colour:
Violet-red to red-orange
Lustre:
Sub-Adamantine, Resinous
Hardness:
4
Specific Gravity:
5.222 (Calculated)
Crystal System:
Tetragonal
Name:
for the composition, that has nickel (Ni) and arsenic (As)
Type Locality:
Dimorph of:
Isostructural with:
One of the most simple nickel arsenate minerals (compare xanthiosite, aerugite, petewilliamsite, honzaite; and annabergite).
Unique Identifiers
Mindat ID:
54345
Long-form identifier:
mindat:1:1:54345:9
GUID
(UUID V4):
(UUID V4):
bba2c2e2-b22c-4315-a8ee-34ac7ba23eb5
IMA Classification of Niasite
Approved
IMA Formula:
Ni2+4.5(AsO4)3
First published:
2020
Classification of Niasite
8.AB.
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Nia | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Niasite
Sub-Adamantine, Resinous
Transparency:
Transparent
Colour:
Violet-red to red-orange
Streak:
pale pink
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
5.222 g/cm3 (Calculated)
Chemistry of Niasite
Mindat Formula:
Ni2+4.5(AsO4)3
Elements listed:
Crystallography of Niasite
Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4 2d
Cell Parameters:
a = 6.8046(8) Å, c = 18.619(1) Å
Ratio:
a:c = 1 : 2.736
Unit Cell V:
862.11 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.274 Ã… | (18) |
| 3.008 Ã… | (25) |
| 2.752 Ã… | (100) |
| 2.330 Ã… | (10) |
| 1.706 Ã… | (21) |
| 1.678 Ã… | (28) |
| 1.446 Ã… | (13) |
| 1.412 Ã… | (10) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Niasite
General Appearance of Type Material:
sugary aggregates of irregular, rounded grains or short prisms
Place of Conservation of Type Material:
mineralogical collections of the (1) Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 74203 (type), and (2) the American Museum of Natural History, Central Park West and 79th Street, New York City, NY 10024, USA, catalogue number 17956 (cotype)
Geological Setting of Type Material:
Breakdown of primary nickeline under dry (low relative humidity) and oxidizing (high oxygen fugacity) conditions
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Nash, B.P., Plášil, J., Smith, J.B., Feinglos, M.N. (2020) Niasite and johanngeorgenstadtite, Ni2+4.5(AsO4)3 dimorphs from Johanngeorgenstadt, Germany. European Journal of Mineralogy: 32: 373–385.
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Niasite associated with Aerugite | Ni8.5(AsO4)2As5+O8 |
| 1 photo of Niasite associated with Xanthiosite | Ni3(AsO4)2 |
Related Minerals - Strunz-mindat Grouping
| 8.AB. | Rodolicoite | Fe3+PO4 |
| 8.AB. | Johanngeorgenstadtite | Ni2+4.5(AsO4)3 |
| 8.AB. | Borisenkoite | Cu3[(V,As)O4]2 |
| 8.AB. | Olsenite | KFe4(PO4)3 |
| 8.AB. | Karwowskiite | Ca9Mg(Fe2+0.5â—»0.5)(PO4)7 |
| 8.AB.05 | Farringtonite | Mg3(PO4)2 |
| 8.AB.10 | Ferrisicklerite | Li1-x(Fe3+xFe2+1-x)PO4 |
| 8.AB.10 | Heterosite | (Fe3+,Mn3+)PO4 |
| 8.AB.10 | Lithiophilite | LiMn2+PO4 |
| 8.AB.10 | Natrophilite | NaMn2+PO4 |
| 8.AB.10 | Purpurite | Mn3+(PO4) |
| 8.AB.10 | Sicklerite | Li1-x(Mn3+xMn2+1-x)PO4 |
| 8.AB.10 | Simferite | LiMg(PO4) |
| 8.AB.10 | Triphylite | LiFe2+PO4 |
| 8.AB.10 | Karenwebberite | NaFe2+PO4 |
| 8.AB.15 | Sarcopside | Fe2+3(PO4)2 |
| 8.AB.15 | Chopinite | Mg3(PO4)2 |
| 8.AB.15 | ZavalÃaite | Mn2+3(PO4)2 |
| 8.AB.20 | Beusite | Mn2+Mn2+2 (PO4)2 |
| 8.AB.20 | Graftonite | Fe2+Fe2+2(PO4)2 |
| 8.AB.20 | Graftonite-(Ca) | CaFe2+2(PO4)2 |
| 8.AB.20 | Graftonite-(Mn) | MnFe2+2(PO4)2 |
| 8.AB.20 | Beusite-(Ca) | CaMn2+2(PO4)2 |
| 8.AB.25 | Xanthiosite | Ni3(AsO4)2 |
| 8.AB.30 | Lammerite | Cu3(AsO4)2 |
| 8.AB.30 | Paralammerite | Cu3(AsO4)2 |
| 8.AB.35 | Mcbirneyite | Cu3(VO4)2 |
| 8.AB.35 | Stranskiite | Zn2Cu(AsO4)2 |
| 8.AB.35 | Pseudolyonsite | Cu3(VO4)2 |
| 8.AB.40 | Lyonsite | Cu3Fe4(VO4)6 |
| 8.AB.40 | Michalskiite | Fe3+1.33Cu2+2(MgFe3+)2(VO4)6 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Niasite
mindat.org URL:
https://www.mindat.org/min-54345.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Niasite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) - Newsletter 54. European Journal of Mineralogy, 32 (2) 275-283 doi:10.5194/ejm-32-275-2020
Localities for Niasite
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Germany (TL) | |
| Kampf et al. (2020) +1 other reference |
Johanngeorgenstadt, Erzgebirgskreis, Saxony, Germany